Jackson’s ruling on the evidence represents a partial victory for Mueller’s team. The judge signaled Tuesday that she would allow prosecutors to introduce evidence related to a Justice Department review of Manafort’s lobbying in the 1980s, Reuters reported.

However, Jackson said she would limit the evidence introduced by Mueller’s team to avoid a “trial within a trial” that could lead to the jury reviewing troves of documents.

Prosecutors had requested to introduce decades-old evidence showing Manafort’s alleged “bad acts” in the past in order to counter the defense’s argument that Manafort did not know the laws governing foreign lobbying. Jackson reportedly asked the prosecution and defense to agree to a stipulation indicating Manafort was alerted to rules governing lobbying disclosure in the 1980s.

Tuesday's developments follow a Wall Street Journal article on Monday that said both sides engaged in talks last week about a deal to resolve the second set of charges. The talks reportedly stalled over objections raised by Mueller.